Pour all the ingredients into the bottle and stir gently until they’re thoroughly blended. Spritz on towel-dried hair and style however you normally would. It’ll take several uses before you see results, although if you blow-dry or heat style your hair regularly, you’ll see results faster.

Warning: If your hair is naturally dark brown or black, then this spray will give you highlights, but they’ll be brown or ginger, not blond. If you want to go more than three shades above your natural color, then it’s always best to visit a stylist. And as always, perform a strand test on an inconspicuous piece of hair before applying all over to ascertain how your hair will react.